/**
 * @author guchenbo
 * @date 2021/7/20
 */
object Test {
  def main(args: Array[String]): Unit = {
    val map = Map("France" -> "Paris", "Japan" -> "Tokyo", "China" -> "Beijing")
    val o = map.get("France")


    o match {
      case Some(v) => println(v)
      case None => println("none")
    }


  }
}
